Emergency exit bolt



Sept. 7, 1943. E. 0. WHITE EMERGENGY EXIT BOLT Filed July 16, 1941 2 Sheets-Sheet l INVENT ATTORNEY Sept y E. 0. WHITE V 2,328,936

' EXIT B Filed July 16, 1941 2 Sheets-Sheet s invention relate s' to "bolt" f or emergency imuch complicated; expensive fto manufacture and rather difiicult to maintain. in satisfactory working-condition,

:QByreferring to the drawings, part of this-application, it will be observed thatFig. 1 is a plan Pits main object oprbvlde such abolt that simple in construction, and

'a'lntegral-with thelmain arm- Eare two sup- 1 'ports'jxwith righ't angl'e en'ds 4 to which is ati tached thecase co'ver z by means of screws 25 .in' 'screw'xholesi: 25alur A suitabledhandlei 24 is attached td the outside of cover 2. Fig.2'shows the bolt; in'vlockedi position by reference to L de'- scri-ptiveinumeral's l1t'o 25 inclusive;andin.un-

locked position by reference to numerals 3311, 4d,

and dotted lines. The unlocked position is caused view. of the assembled bolt with its cover removed aonline |I of Fig. 2; ;Fig. 2 is a sectional view in elevationon line 2+2of Fig. 1; Fig. 3isan ,end view online 3-3 of Fig. 1; Fig 4 is a top 1 planrview of the bolt assembly that fits on the door and wall with bolt attached; Fig. 81s a top [plan view showing the door closed and partly myopen; Fig. 9 is an elevation of wall supporting Mpart of bolt assembly on door frame. j Similar reference. numerals refer to "parts throughout the several views.

that the bolt assembly is mounted'in a trough like case I. In one end there is an L shaped boltthat is on a shaft l5 which is. held in place by bearing holes in the sides of the case I. About shaft 23 ,to which two link connections 1 are attached and lead to another pair ofglinks 6 theends of the first pair of links]. The second pair of links .6 haveftheir other ends carried on leading from the center of shaft 21110 the center passes and carries an end of the main operating arm 5 of the device. .At the. opposite end ofthe Q case l the main operating arm 5 is swung in a pair of links 8 ona shaft-ll with the other ends \of the links 8; supported on a shaft l0 .thatflis held in; place by its en'dsinserted in the sidesof the case I. About the middle offthe main arm 5 toijmain arm Bwith otherends of springsZZ attached "to a bar l9 supported in a pair'of V f shaped arms I8 held on studs" in the sides of --ywxlthe case I. Ihe V shaped arms. 18 are provided with a second bar 20 that is parallel with bar J9 with a flat member 2i as a meansito hold. the

'dooryFig. 5 is a side view of Fig 4'; Fig. 6 is an yend'view ofFig. 4; Fig. 7 is an elevation of a;

similar Again referring to the drawings it will-be seen i the middle of the. bolt member there is another through which a shaft! 4 passes and also through ashaft [2 with its ends; held in holesfin each side 'ofthe case I. The second set ,of links are provided with a hole in each off center. on a line of shaft l4. Through these. holes a-shaft I3 by pressure exerted against cever 2 that shifts the bolt mechanism to unlocked position. In case of panic any pressure against the cover would un lock the door. The bolt becomes locked by pull on handle fl attached to bolt assembly cover 2. The door 26 is carried on regular hinges 21 fastened to door frame 28.

The bolt plunger or tongue. is held in femaleTpart 29 10s]; on the door frame.

In operation the locked position by means of the tension of the coil springs. When locked the springs pull the V shaped arm and hold thebolt assembly with the tongue extended. When pressureis exerted against the cover with sufiicient force the tension of the springs is overcome and the V shaped arm is, shiftedbeyond its pivot points thus alp lowing the tension of thesprings to retain the tongue in unlocked position; To'lock the bolt a pull on the handle overcomes the spring ten- R sion and shiftsthe V shaped arm. Both positions are clearly shown in Fig. 2. r

The bolt assembly maybe made out of any material best suited for the purpose.

While I have shown the preferred embodiment of my invention I do not wish to limit myself to as pair of coil springs 22 are mounted with one" 1 endof teach attached to abar it" that is welded.

the precise and exact details of structure butreservethe right to, make any and all modifications and changes so long as I remain within the spirit and scope of the followingclaims.

' Having described my invention I claim:

. 1.,An' emergency exit bolt comprising, an oblong enclosing caseattached to adoor, a main. membermounted in said case and :swung at each end onfa pair of links supportedon a shaft with bear ings in the wall of said case, the tongue of said bolt being Lshaped withthe top of the L supported on ashaft with hearings in said case, and another shaft through said L shaped tongue,

a pair of links attached to said second shaft of the tongue and leading to and connected to the pair of links at the locking; end of ;saidmain N In Fig. 8 the door isshown closed. and partly open by dotted :lines and 24a and bolt is held in locked or unmember, saidmain member having two L shaped arms integral with said memben'said L shaped arms having the cover of the bolt assembly attached by screw means, and'a pair of coil springs attachedtosaidmain member and also attached to a V-shaped rocker arm, said rocker arm disposed to be held in two positions by means of said coil springs.

2. An emergency exit bolt comprising, alock- 'ing member L, shaped mounted on a shaft 7 through its innerend, a pair of links-attached to a shaft passing through the mid section of said locking member, the other ends of said linksattached to 'a shaft through a second pair of in locked andfunlocked position by manual force overcoming th'e'spring tension, a cover attached to supportingarms integral with said operating bar, and handle means attached to said cover:

3.-An emergency .exit door bolt comprising, a

trough-like case, an operating barswung cpa-ralleliinfsaid case on shafts and: links,., said bar' disposed to be moved inward and to the left iroin front by pressure exerted against it, anddisposed to be moved outward and to the right from front I i by pull exerted on it, an L-shaped locking tongue mounted in one end of said case on a shaftpassd ing through it and the 'walls of the case, a pairof links connecting said L-shaped tongue to a' pair of links supporting an end of said operating bar, said L-s'haped locking tongue disposed to ,move in unison with said, operating, bar, a pair of coil; springs mounted with two" of their ends attached to saidoperating bar and the other ends of the springs attached to a cross shaft carried in a pair of V-shaped rocker arms, the V-points of. said arms carried on studs in the walls ofthe I case, said springs and-\ I.-shaped arms disposed to hold the bolt assembly in locked position, and

in unlocked: position by manual force overcoming the tension of said springs; a cover over the internal parts in said case; said cover supported by integralarmsof said operating bar, and a handle on; said cover, said cover being parallel and equal; in length with the trough -like case and disposed to act as tri-ggermeans; for unlocking the bolt?when pressure is exerted against-said cover;- said-bolt; assembly disposed to: become locked-1 when :said handle and cover are-pulled outward from the door EMORY o. wmm a 

